Experiments with Exit Portals.

thesquirell · Post by **thesquirell** » Fri Aug 28, 2015 10:35 am

Contegufo, what kind of a material is your bluish sphere in the first image? Just curious.

contegufo · Post by **contegufo** » Fri Aug 28, 2015 11:48 am

Glass.

contegufo · Post by **contegufo** » Fri Aug 28, 2015 11:53 am

My concern was that the EPs are recommended for noise reduction but then do not work well, and then I have to find other solutions.
Indigo I like for the essential parameters to manage and significant end result that you get. Maxwell I never liked, V-Ray has too many parameters to be monitored but it works well, Global Illumination of Cinema4D in the hands of experts produces remarkable results.
Indigo'm learning and I will continue with that putting in place the necessary tricks because lighting Indigo is unique!
If version 4 will be the GPU rendering this will improve the workflow and the ability to do many expressing.
About the hardware aspect of the death of a friend to inherit a MacPro 12core!

Thank

thesquirell · Post by **thesquirell** » Fri Aug 28, 2015 8:10 pm

Not sure if I understand that correctly, but sorry to hear that.

Anyway, you do have all the right to be disappointment, since EPs don't actually work as you might hopped it will, but, they are not actually needed, at all. Sampling Priority Masking would be more of a use then them, imho. They do clean up the noise faster in those primary calculations, but for those more complicated effects you'll still have to wait some time. As for the caustics, new Indigo will be much, much faster with Photom Mapping, let's just see how accurate will it be.

As for the glass material, it has some subsurface scattering, or?

Pibuz · Post by **Pibuz** » Fri Aug 28, 2015 9:37 pm

Never noticed that!

I usually render interior scenes with EXR maps, so I don't get the sun/sky sharp lights..
I agree with you, Contegufo, about giving a tool 100% working BUT....are you using the last official version or the latest beta release? It's known that beta versions may be bugged here and there, it's normal

Zom-B · Post by **Zom-B** » Fri Aug 28, 2015 9:53 pm

Pibuz wrote: Never noticed that!

I fight with that since forever

Pibuz wrote:I usually render interior scenes with EXR maps, so I don't get the sun/sky sharp lights..

Then you missed something, there are really great EXRs that have enough dynamic range to have proper sun and other lightsorces saved

Pibuz wrote:I agree with you, Contegufo, about giving a tool 100% working BUT....are you using the last official version or the latest beta release? It's known that beta versions may be bugged here and there, it's normal

Beta versions are usually stable and have no issues, otherwise people like me would report that!
This EPs situation is present since day one, Ono already worked on enhancing them (http://www.indigorenderer.com/content/r ... -indigo-38)
But there seemed to be issues that hold back an release of this feature... now v4 seems to be top priority, But I'm sure the devs havn't forgotten EPs and will work out something we all are happy with... at some point

Pibuz · Post by **Pibuz** » Fri Aug 28, 2015 9:58 pm

I DO know some EXR produce sharp lights.
I simply like the blurred ones, sorry: I miswrote that.

contegufo · Post by **contegufo** » Fri Aug 28, 2015 10:26 pm

@thesquirell

The material is a glass without any peculiarities. It appears bluish because of EPs. In the following EPs without the windows it looks like glass should appear. After 10 hours!

Zom-B · Post by **Zom-B** » Fri Aug 28, 2015 10:51 pm

contegufo wrote:The material is a glass without any peculiarities. It appears bluish because of EPs. In the following EPs without the windows it looks like ilvetro should appear. After 10 hours!

Please keep rendering in PT and BiDirPT. MLT has benefits, but while it starts great, on the long end, noise keeps staying!
If you NEED to use MLT, then adjust the Large mutation prob. to 0.85 or higher for less "patchy noise" to more PT like grain...

contegufo · Post by **contegufo** » Fri Aug 28, 2015 10:58 pm

Test in SketchUp 2015.
Large mutation prob. to 0.85 not available in SketchUp 2015.
Should I do it all in C4D!

contegufo · Post by **contegufo** » Fri Aug 28, 2015 11:08 pm

@ Pibuz

The latest version of Indigo 3.8.26 with the latest version of the plugin for C4D and SckecthUp '15.
In C4D I can only run one instance, but this is a bug that will be fixed.

contegufo · Post by **contegufo** » Sat Aug 29, 2015 3:11 am

The first was remade in C4D floor with non-reflective, exponent = 10. After 3,18 hours.
The second is the same as the test of onset but after 14 hours.
The picture is much cleaner with SS = 3 as in the other imagine.

It would appear that the presence of some reflective material contributes to a cleaner together.

Post by **Oscar J** » Sat Aug 29, 2015 3:44 am

Perfectly acceptable rendering times IMO. I mean, look at those great looking caustics you got!

contegufo · Post by **contegufo** » Sat Aug 29, 2015 3:52 am

Yes the picture is good without fireflies with little noise that over time will be reduced.

I forgot; large mutation = 0.85.
Max Change = 0.005
MLT with BiDir.

I downloaded free HDR http://www.hdr-sets.com/index.php/free-sets.html but not intuitive to choose which map. Well ......

contegufo · Post by **contegufo** » Sat Aug 29, 2015 7:53 am

Here I put an environment map, no fireflies, low noise but the immgine has no life!
Quite different with the sunlight coming in but it is a matter of taste and choices photographic techniques.

Experiments with Exit Portals.

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